Perhaps you should try some spelling variations:
vu khach » vu khac, vay khach, cua khach
thi hanh » thi thanh
hanh lai » hanh lam, hanh tai, thanh lap
lam duoc » nam duoc, luat duoc, lam thuoc
vu khanh » vu thanh, van khanh, duy khanh
cua viet » ca viet, hoa viet, cua vat
ky hang » ky nang, ly hang, ky dang
lam xuc » cam xuc
va hanh » van hanh, va thanh, va danh
lai cua » dai cua, hai cua, lai chau
va hoc » van hoc

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu khach) OR (vu khanh)) ky hang va hoc. thi hanh ((lam xuc) OR (lam duoc)) va hanh lai cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu khach) OR (vu khanh)) ky hang va hoc. thi hanh ((lam xuc) or (lam duoc)) va hanh lai cua viet~".
• Adding a wildcard symbol may retrieve word variants: ((vu khach) OR (vu khanh)) ky hang va hoc. thi hanh ((lam xuc) or (lam duoc)) va hanh lai cua viet*.